/Engine/Plugins/Experimental/Mutable/Source/CustomizableObject/Classes/MuCO/CustomizableObject.h
Call before using Mutable's Projector testing with mask out features. It should only be loaded when needed because it can spend quite a lot of memory Can cause a loading hitch
[UFUNCTION](Programming/UnrealArchitecture/Reference/Functions)(BlueprintCallable, Category=CustomizableObject) void LoadMaskOutCache()